Telescope, field-glass, and the like.



No. 849,409. PATENTED APR. 9, 1907. K. MARTIN. TELESCOPE, FIELD GLASS, AND THE LIKE.

APPLIOATION FILED JAN.31, 1906.

i ime-sesgs i 07* d 1250mm for sporting purposes.

ilNlltiElD STATES PATlTENT GFFlCE.

KARL MARTIN, OF RATHENOW, GERMANY, ASSIGNOR TO THE FIRM OF Ri-YIHEMJYVER OPTISCHE 1N DUSJR I E Ah STALT 'BUSCH, A. (:l. OF RAllll NO W, GERMANY.

VORMALS EMIL TELESCOPE, FIELD-GLASS, ANDTHE LIKE.

No. sea-10o.

Specification of Letters Patent.

Patented April 9, 1907.

Application filed January 31,1906; Serial No. 298,855.

To all whom it may concern.-

Be it known that I, Kan]. MARTIN, a subject of the King of Prussia, German Emperor, and a resident of Rathenow, in the Province of Brandenburg, German Empire, have invented certain new and uselul ln'iprovei'nents in Telescopes, Field-Glasses, and the Like, 01' which the following is an exact specification.

This invention relates to telescopes, lieldglasses and the like, and more especially to binoculars, and has for its purpose to provide protecting-covers for the eyepieces.

v Vhen telescopes or binoculars are carried in the open air on the person, they are open to the objection that the lenses or the eye pieces are liable to be soiled by rain, beads of moisture or perspiration, dust, and the like. A smooth and clean cloth is not always at hand for cleaning the lenses, and, furthermore, time is lost by this manipulation, which is very disadvantageous when telescopes or binoculars are used for military shooting or Hitherto attempts have been made to remove this defect by covering the lenses oi. the eyepieces of heldglasses with leather covers loosely mounted on the eyepieces. This arrangement does not fit closely and is cumbersome when using the glass, hwing to the leather covers hanging in front of the face of the spectator.

By this present invention a good protection for the cyepieces obtained withoutenlarging the dimensions oi the telescope, and at the same time the lateral rays of light are prevented from entering the eye, which is an additional advantage.

In order to make the invention clear, reierence is made to the accompanying drawing, which is partly in elevation and partly in sectional elevation.

On the left-hand side of the drawing the protecting-cover is shown opened and on the right-hand side it is shown folded down.

In the figure, 0 o are the eyepieces of a binocular telescope, and each eyepiece is revided with a ring r, mounted thereon, w ich ring has hinged thereto a cover (1 by means of the hinge cover is rectangularly turned oil as to encircle the edge 0 of the eyepiece, thereby efiectively preventing the rain and the like from entering the inner of the eyepiece. Furthermore, due to the projecting edge ofthe cover, its opening is facilitated. The ring 1' 'in each case has fixed thereto-a spring f,

whichwith its free end presses against the flattened parts g ol the hinge when the cover is opened or folded down, thereby insuring that the cover shall remain in either the open or closed position. From the left-hand side of the .ligure it will be seen that the cover in its opened position protects the eye against lateral rays.

Having thus fully described the nature ol my invention, what I desire to secure by Letters Patent 01 the United States is ln telescopes, field-glasses and the like, the combination with eyepi'cces, of protectingcovers, attached to the eyepieces by flattened hinge members and having their edges rectangularl y turned oil, for cl'icircling the outer edge of the 0 ye pieces, and of a spring pressing with one end against the flattened hinge nicn ber oi the cover insuring thereby the retention oi the covers in their opened or closed positimi, for the purpose of preventing the eyepier-os from being soiled, and protecting the eye of the observer against lateral rays.

lin witness whereof I have hereunto set my hand in the presence of two witnesses.

K A'RL MARTIN.

\Vitnesses:

l'VOLDEZtIAR HAUr'r, ,l'lnnnr Hiisrnn.

The circular edge of the 

